<template>
	<view class="common-car">
		<view class="empty-shop-car" v-if="isEmpty">
			<image src="../../static/empty_shop_car.png" class="empty-shop-car-image" mode=""></image>
			<text style="color: #333333;">当前您的购物车是空的</text>
			<view class="empty-shop-car-btn" @click="goClass()">
				<text>去逛逛</text>
			</view>
		</view>
		<view class="shop-car" v-else>
			<view class="shop-car-header">
				<text style="color: #999999;font-size: 24rpx;">商品库存有限，请尽快下单</text>
				<text @tap="cut">{{isCut?'管理':'完成'}}</text>
			</view>
			<view class="store-box" v-for="(itemw,indexw) in datas" :key="indexw">
				<view class="goodsInfo">
					<image src="../../static/select.png" v-if="itemw.checked == 2" class="checked-image"
						mode="" @tap="goodsCheck(indexw,itemw.checked)"></image>
					<image src="../../static/not_select.png" v-else class="checked-image" mode=""
						@tap="goodsCheck(indexw,itemw.checked)"></image>
					<view class="goodsInfo-right">
						<image :src="itemw.goods.main_image" class="goods-image" mode=""></image>
						<view class="goodsInfo-box">
							<text class="goods-name">{{itemw.goods.goods_name}}</text>
							<text class="spe">{{itemw.sku.attr}}</text>
							<view class="goods-box">
								<text class="goods-price">¥{{itemw.sku.price}}</text>
								<view class="goods-num-box">
									<view class="goods-image-sub" @tap="sub(indexw,itemw.num)">
										-
									</view>
									<view class="goods-num">
										{{itemw.num}}
									</view>
									<view class="goods-image-add" @tap="add(indexw,itemw.num)">
										+
									</view>
								</view>
							</view>
						</view>
					</view>
				</view>
			</view>
			<view style="height:118rpx"></view>
			<view class="statistics-box">
				<view class="statistics">
					<view class="statistics-left" v-if="statisticsIndex" @tap="allCheck">
						<image src="../../static/select.png"  class="checked-image" mode="" >
						</image>
						<text>全选</text>
					</view>
					<view class="statistics-left" v-else @tap="allCheck">
						<image src="../../static/not_select.png"  class="checked-image" mode="" >
						</image>
						<text>全选</text>
					</view>
					<view class="statistics-right" v-if="isCut" @tap="accounts">
						<text style="color:#333333">合计：</text><text class="text-color">¥{{total}}</text>
						<view class="btn">
							<text>去结算</text>
						</view>
					</view>
					<view class="statistics-right" v-else @tap="delect">
						<view class="btn">
							<text>删除</text>
						</view>
					</view>
				</view>
			</view>
		</view>
		<slot></slot>
	</view>
</template>

<script>
	import { http } from 'uview-plus'
	export default {
		name: "commonCar",
		data() {
			return {
				isEmpty: true,
				iPhoneX: false,
				datas: {},
				statisticsIndex:false,
				total:0,
				isCut:true,
				list:[]
			}
		},
		 onLoad() {
			this.showCar()
		},
		methods: {
			async showCar(){
				await http.get('/shop/user/cart',{header:{'Content-Type':'multipart/form-data'}}).then(res => {
					this.list = res.items
				
					this.list.map(item => {
						item.checked = 1
					})
				});
				if (this.list.length == 0) {
					this.isEmpty = true
				} else {
					this.datas = this.list
					this.isEmpty = false
				}
				this.statistics()
			},
			//商品选择
			goodsCheck(goodsIndex, goodsChecked) {
				if (goodsChecked == 1) {
					this.datas[goodsIndex].checked = 2
				} else {
					this.datas[goodsIndex].checked = 1
				}
				
				//判断是否全选
				let statisticsIndex = true
				this.datas.find((item,index)=>{
					if(item.checked == 1){
						statisticsIndex = false
					}
				})
				if(statisticsIndex == false){
					this.statisticsIndex = false
				}else{
					this.statisticsIndex = true
				}
				
				this.statistics()
			},

			//减少
			async sub(goodsIndex, goodsnum){
				if(goodsnum == 1){
					uni.showToast({
						title:'宝贝数量不能再减少了',
						icon:'none'
					})
					return
				}else{
					this.datas[goodsIndex].num--
				}
				await http.post('/shop/user/cart/update',{user_cart_id:this.datas[goodsIndex].id,num:this.datas[goodsIndex].num}).then(res => {
					getApp().get_shopping_List()
					this.statistics()
				});
				
			},
			//增加
			async add(goodsIndex, goodsnum){
				this.datas[goodsIndex].num++
				await http.post('/shop/user/cart/update',{user_cart_id:this.datas[goodsIndex].id,num:this.datas[goodsIndex].num}).then(res => {
					getApp().get_shopping_List()
					this.statistics()
				});
				
			},
			//全选
			allCheck(){
				if(this.statisticsIndex){
					this.datas.find((item,index)=>{
						item.checked = 1
					})
					this.statisticsIndex = false
				}else{
					this.datas.find((item,index)=>{
						item.checked = 2
					})
					this.statisticsIndex = true
				}
				this.statistics()
			},
			//合计
			statistics(){
				let total = 0
				this.datas.find((item,index)=>{
					if(item.checked == 2){
						total = total + item.sku.price*item.num
					}
				})
				this.total = total.toFixed(2)
			},
			cut(){
				this.isCut = !this.isCut
				this.statisticsIndex = true
				this.allCheck()
			},
			accounts(){
				let judge = this.judgeSelect()
				let arr = []
				if(judge){
					this.datas.find((item,index)=>{
						if(item.checked == 2){
							arr.push(item)
						}
					})
					
					
					uni.setStorageSync('orderInfo',arr)
					uni.navigateTo({
						url:"/pages/order/creatOrder"
					})
				}else{
					uni.showToast({
						title:'您当前未选择任何商品,结算失败',
						icon:'none'
					})
				}
			},
			delect(){
				let judge = this.judgeSelect()
				let arr = []
				if(judge){
					this.datas.find((item,index)=>{
						if(item.checked == 2){
							arr.push(item.id)
						}
					})
					http.post('/shop/user/cart/delete',{user_cart_ids:arr}).then(res=>{
						uni.showToast({
							title:'删除成功',
							icon:'none'
						})
						this.showCar()
					})
				}else{
					uni.showToast({
						title:'您当前未选择任何商品,删除失败',
						icon:'none'
					})
				}
				
			},
			judgeSelect(){
				let judge = false
				this.datas.find((item,index)=>{
					if(item.checked == 2){
						judge = true
					}
				})
				return judge
			},
			goClass(){
				uni.switchTab({
					url:'/pages/product_List/product_List'
				})
			},
			goOrder(){
				uni.switchTab({
					url:'/pages/order/creatOrder'
				})
			}
		}
	}
</script>

<style lang="scss" scoped>
	.common-car {
		width: 750rpx;
		min-height: 100vh;
		display: flex;
		flex-direction: column;
		align-items: center;
		background: #F5F5F5;
	}

	.empty-shop-car {
		width: 750rpx;
		min-height: 680rpx;
		display: flex;
		flex-direction: column;
		align-items: center;

		.empty-shop-car-image {
			width: 340rpx;
			height: 278rpx;
			margin-top: 102rpx;
		}

		text {
			margin-top: 40rpx;
			font-size: 28rpx;
			font-weight: 400;
			color: #fff;
		}

		.empty-shop-car-btn {
			width: 240rpx;
			height: 90rpx;
			background: $main-color;
			border-radius: 200rpx;
			margin-top: 40rpx;
			text-align: center;
			line-height: 90rpx;
			font-size: 30rpx;
			font-weight: 400;
			color: #000;
		}
	}

	.shop-car {
		width: 750rpx;
		display: flex;
		flex-direction: column;
		align-items: center;

		.shop-car-header {
			width: 690rpx;
			height: 80rpx;
			display: flex;
			flex-direction: row;
			align-items: center;
			justify-content: space-between;

			text {
				font-size: 28rpx;
				font-weight: 400;
				color: #313133;
			}
		}

		.store-box {
			width: 750rpx;
			margin-bottom: 20rpx;
			display: flex;
			flex-direction: column;
			align-items: center;
			background-color: #FFFFFF;

			.store-header {
				width: 690rpx;
				height: 78rpx;
				padding: 0 30rpx;
				display: flex;
				flex-direction: row;
				align-items: center;
				font-size: 28rpx;
				font-weight: 400;
				color: #313133;

				.checked-image {
					width: 36rpx;
					height: 36rpx;
				}

				text {
					font-size: 28rpx;
					font-weight: 400;
					color: #313133;
					margin-left: 20rpx;
				}

				.label {
					width: 14rpx;
					height: 24rpx;
					margin-left: 10rpx;
					margin-top: 5rpx;
				}
			}

			.goodsInfo {
				width: 690rpx;
				height: 246rpx;
				display: flex;
				flex-direction: row;
				align-items: center;
				border-bottom: 2rpx solid #EDEDED;

				&:nth-last-child(1) {
					border: none;
				}

				.checked-image {
					width: 36rpx;
					height: 36rpx;
				}

				.goodsInfo-right {
					width: 634rpx;
					height: 246rpx;
					margin-left: 20rpx;
					display: flex;
					flex-direction: row;
					align-items: center;
					.goods-image {
						width: 172rpx;
						height: 172rpx;
					}
					.goods-image-sub{
						width: 44rpx;
						height: 44rpx;
						border-radius: 22rpx;
						background: #F8F9FA;
						text-align: center;
					}
					.goods-image-add{
						width: 44rpx;
						height: 44rpx;
						border-radius: 22rpx;
						background: #999999;
						text-align: center;
					}
					.goodsInfo-box {
						width: 428rpx;
						margin-left: 24rpx;
						display: flex;
						flex-direction: column;
						align-items: center;

						.goods-name {
							width: 428rpx;
							font-size: 26rpx;
							font-weight: 400;
							color: #313133;
						}

						.spe {
							width: 428rpx;
							margin-top: 10rpx;
							font-size: 24rpx;
							font-weight: 400;
							color: #919298;
						}

						.goods-box {
							width: 428rpx;
							margin-top: 18rpx;
							display: flex;
							flex-direction: row;
							align-items: center;
							justify-content: space-between;

							.goods-price {
								font-size: 32rpx;
								font-weight: 400;
								color: #313133;
							}

							.goods-num-box {
								width: 168rpx;
								height: 46rpx;
								display: flex;
								flex-direction: row;
								align-items: center;

								.goods-image {
									width: 46rpx;
									height: 44rpx;
									text-align: center;
									line-height: 44rpx;
									border: 1rpx solid #CFCFCF;
									font-size: 38rpx;
								}

								.goods-num {
									width: 76rpx;
									height: 44rpx;
									text-align: center;
									line-height: 44rpx;
									font-size: 33rpx;
									font-weight: 400;
									color: #666666;
								}
							}
						}
					}
				}
			}
		}

		.statistics-box {
			width: 750rpx;
			display: flex;
			flex-direction: column;
			align-items: center;
			background-color: #FFFFFF;
			position: fixed;
			bottom: 0;

			.statistics {
				width: 720rpx;
				height: 98rpx;
				display: flex;
				flex-direction: row;
				align-items: center;
				justify-content: space-between;

				.statistics-left {
					width: 120rpx;
					display: flex;
					flex-direction: row;
					align-items: center;
					justify-content: space-between;

					image {
						width: 36rpx;
						height: 36rpx;
					}

					text {
						font-size: 30rpx;
						font-weight: 400;
						color: #313133;
					}
				}

				.statistics-right {
					width: 600rpx;
					display: flex;
					flex-direction: row;
					align-items: center;
					justify-content: flex-end;

					.btn {
						width: 178rpx;
						height: 70rpx;
						border-radius: 35rpx;
						background: #08AFFE;
						text-align: center;
						line-height: 70rpx;
						font-size: 26rpx;
						font-weight: normal;
						margin-left: 40rpx;
						
					}

					text {
						font-size: 26rpx;
						font-weight: 400;
						color: #FFFFFF;
					}

					.text-color {
						// color: rgba(242, 18, 18, 1);
						color: #333333;
						font-size: 32rpx;
					}
				}
			}

		}
	}
</style>
